&AB&H* 



fcUBTJS. 101 



I. 5-nate thin green on both sides pilose beneath coarsely and 

 doubly dentate-serrate, term. It. broadly obovate subcordate be- 

 low cuspidate, pan. long lax leafy below hairy with short few- 

 flowered patent subcorymbose branches, rachis wavy, prickles 

 slender declining, sep. long-pointed hairy tomentose. R. calva- 

 tus Blox. St. green, becoming quite glabrous ; a few subsessile 

 glands ; setae and aciculi very few. L. very slightly pilose above, 

 hard and rough beneath. Rachis of fl. -shoot wavy. The ori- 

 ginal R. Salteri has a very few sunken setae on its panicle and 

 calyx ; fl. -shoot with a nearly straight rachis ; branches of pan. 

 more corymbose ; fr.-sep. erect ; prickles fewer on all parts 

 than the typical R. calvatus. But they seem to be the extremes 

 of one species. Hedges. Sh. VI. VIII. E. 



21. R. macrophyllus (W. and N.); st. arched or prostrate an- 

 gular with scattered patent hairs, prickles short rather slender 

 scarcely exceeding the longitudinal extent of their large base 

 much declining, L 5-nate thin green and tomentose or pilose be- 

 neath, term. It. elliptic-obovate, pan. compound rather elongate 

 hairy tomentose with short sunken setas, branches axillary race- 

 mose ascending, prickles slender much declining from a large 

 base, cal. hairy tomentose. R. G. 12. E. B. 2625 ? R. Schlech- 

 tendalii Bab. R. amplificatus Lees. St. thick, very long, pur- 

 plish green. Prickles usually singularly thick at their base but 

 the upper part slender, sometimes rather small, yellow. Short 

 aciculi and setae not unfrequent. L. sometimes much rounder 

 and cuspidate. Hedges and thickets. Sh. VII. VIII. E. I. 



22. R. Sprenaelii (Weihe) ; st. prostrate round hairy, prickles^ 

 many unequal from a large compressed base deflexed, 1. 3 5- 

 nate-pedate green on both sides distantly pilose beneath, term. It. 

 elliptical acuminate, pan. lax leafy below hairy tomentose setose, 

 branches divaricate few-flowered the lower axillary ones often long 

 and decompound, prickles slender few, sep. erect-patent hairy to- 

 mentose long-pointed. a. R.Borreri (Bell Salt.); st. thick strong 

 with many often very unequal prickles and some setae and aciculi, 

 1. mostly 5-nate, pan. often corymbose or when the branches are 

 shorter subthyrsoid. /3. R. Sprenaelii (Weihe) ; st. slender with 

 small prickles and subsessile glands, 1. mostly 3-nate, pan. lax 

 few-flowered subcorymbose. R. G. 10. These forms are quite 

 connected by intermediate states ; sometimes a few setas occur 

 on the st. of /3, they are found on the panicle of both. Woods 

 and thickets. Sh. VI. VII. E. 



v. Glandulosi. St. with many hairs glands setse and aciculi 

 passing more or less gradually into scattered prickles. 



A. L. 5-nate (rarely 3-nate] ; basal Us. stalked, not imbricate. 

 Prickles on st. passing abruptly into aciculi and setce. 



23. R. Bloxamii (Lees) ; st. prostrate angular or furrowed, 



